<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Django Page</title>
</head>
<body>
<h1>发布会管理</h1>
<form method="post" action="/login_action/">
    <input name="username" type="text" placeholder="请输入用户名"><br>
    <input name="password" type="password" placeholder="请输入密码"><br>
    {{  error}}<br>
    <button id="btn" type="submit">登录</button>
    {% csrf_token %}
</form>
</body>
</html>